Each player requires a different slot (saved independently) from the available 2.

Stores player's name, score, lives and a counter for an item (?)

The game stores the amount of times you fire a bullet and the number of bullets that hit an enemy. The number of enemies hit and the number of bullets fired are divided by each other and then multiplied by a hundred. That accuracy percentage is then compared to five threshold percentages which decide which ending you get from a total of 5.